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Faculty Profile


Sipahi received his BS from Technical University of Istanbul in 2000, and MS and PhD degrees respectively in 2002 and 2005 from University of Connecticut, all in mechanical engineering. His PhD dissertation which was supervised by Professor Nejat Olgac is entitled "Cluster Treatment of Characteristic Roots, CTCR, A Unique Methodology for the Complete Stability Robustness Analysis of Linear Time Invariant Multiple Time Delay Systems against Delay Uncertainties." 

Awarded with a Chateuabriand scholarship by the French government, he has been a postdoctoral fellow at Universite de Technologie de Compiegne, HeuDiaSyC Labs (CNRS) in France, where he worked with Professor Silviu-Iulian Niculescu (currently at L2S Supelec CNRS) during 2005-2006. In August 2006, he joined the Department of Mechanical and Industrial Engineering at Northeastern University, Boston, where he is currently an associate professor.

Sipahi is the recipient of a 2011 DARPA Young Faculty Award, 2011 College of Engineering Martin W. Essigmann Outstanding Teaching Award, and 2014 College of Engineering Faculty Fellow Award. He has also been actively involved in ASME Dynamic Systems and Control (DSC) Division, taking editorial duties in division newsletter and recently in division-led ASME DSC Magazine. His scholarly activities include publication of 41 journal articles and 72 peer-reviewed conference papers, as well as additional 24 conference presentations. He (co-)edited three book volumes with Springer each with around 400 pages (2009, 2012, 2013), which received over 65,000 chapter downloads to date. His Google Scholar h index is 23.

Sipahi has been actively involved as associate editor, program committee member, chair/co-chair in many conferences organized by ASME, IEEE, and IFAC, including the 2012 IFAC Workshop on Time Delay Systems, which he co-organized at Northeastern University, and of which he was the Program Editor. He is also the co-creator of e-delay newsletter together with Prof. Niculescu, which has about 1,500 members. He was the lead organizer of three full-day educational workshops with Professors Hitay Ozbay, Silviu-Iulian Niculescu, Wim Michiels, Dimitri Breda, and Fatihcan M. Atay in the field of Time Delay Systems at three major control systems conferences (2013, 2014 European Control Conference, and 2013 IEEE Conference on Decision and Control). He is the lead author of the article entitled Stability and Stabilization of Systems with Time Delay, Limitations and Opportunities that was published in 2011 in IEEE Control Systems Magazine, with S.-I. Niculescu, C.T. Abdallah, W. Michiels and K. Gu as co-authors.

Sipahi is a Fellow of ASME since 2014.  


  • PhD (2005), Mechanical Engineering, 
    University of Connecticut

Research & Scholarship Interests

Control systems and mechatronics, stability analysis; control synthesis of dynamical systems with delays; interplay between stability, delays, and graphs; control-systems-aided human-machine systems; engineering education research, disability research
Affiliated With

Department Research Areas

College Research Initiatives

Honors & Awards

  • 2015 ASME Dynamic Systems and Control Division Young Investigator Award
  • 2014 COE Faculty Fellow
  • 2014 ASME Fellow
  • 2011 DARPA Young Faculty Award.
  • 2011 Martin W. Essigmann Outstanding Teaching Award of the College of Engineering, Northeastern University.
  • 2011 Nominated for the Excellence for Teaching Award of Northeastern University.
  • Lead author of the review article published and featured as cover in IEEE Control Systems Magazine February 2011 issue.
  • 2005 Chateaubriand Scholarship to conduct post-doctoral research in France, awarded by the French Government.
  • 2003 Best Master’s Thesis Award of School of Engineering, University of Connecticut.
  • 2002 Best Student Paper Award from Dynamic Systems and Control Division at ASME-IMECE Conference, New Orleans, LA.

Teaching Interests

  • System Analysis and Control
  • Dynamics, Vibrations, and Mechatronics

Professional Affiliations

  • American Society of Mechanical Engineers International
  • Institute of Electrical and Electronics Engineers

Selected Publications

  • W. Qiao, R. Sipahi "Delay-dependent Coupling for a Multi-agent LTI Consensus System with Inter-agent Delays", Physica D: Nonlinear Phenomena, 267, 2014, 112-122
  • I.I. Delice, R. Sipahi "Delay-independent Stability Test for Systems with Multiple Time-Delays", IEEE Transactions on Automatic Control, 57(4), 2012, 963-972
  • Qiao, W., Sipahi, R., 2013, A Linear Time-Invariant Consensus Dynamics with Homogeneous Delays: Analytical Study and Synthesis of Rightmost Eigenvalues, SIAM Journal on Control and Optimization, in print.
  • Nia, P.M., Sipahi, R., 2013, Controller Design for Delay-Independent Stability of Linear Time-Invariant Vibration Systems with Multiple Delays, Journal of Sound and Vibration, 332(14), pp. 3589-3604.
  • Sipahi, R., Delice, I.I., 2013, On Some Features of Core Hypersurfaces Related to Stability Switching of LTI Systems with Multiple Delays, IMA Journal of Mathematical Control and Information, available online.
  • Delice, I.I., Sipahi, R., 2012, Delay-Independent Stability Test for Systems with Multiple Time-Delays, IEEE Transactions on Automatic Control, 57(4), pp. 963-972.
  • Qiao, W., Sipahi, R., 2012, Rules and Limitations of Building Delay-tolerant Topologies for Coupled Systems, Physical Review E, 85(2), 016104.
  • Sipahi, R., Niculescu, S.-I., Abdallah, C.T., Michiels, W., Gu, K., 2011, Stability and Stabilization of Systems with Time Delay, Limitations and Opportunities, IEEE Control Systems Magazine, 31(1), pp. 38-65.
  • Sipahi, R., Delice, I.I., 2011, Advanced Clustering with Frequency Sweeping Methodology for the Stability Analysis of Multiple Time-Delay Systems, IEEE Transactions on Automatic Control, 56(2), pp. 467-472.
  • Sipahi, R., Niculescu, S.-I., 2010, Stability of Car Following with Human Memory Effects and Automatic Headway Compensation, Philosophical Transactions of the Royal Society A, 368, pp. 4563-4583.
  • Sipahi, R., Delice, I.I., 2010, Stability of Inventory Dynamics in Supply Chains with Three Delays, International Journal of Production Economics, 123(1), pp. 107-117.
See Google Scholar Profile for all publications »

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December 9, 2016

MIE Associate Professor Rifat Sipahi has achieved the rank of Senior Member of the IEEE, an honor bestowed only to those who have made significant contributions to the profession. Only about 8% of...

October 23, 2015

MIE Associate Professor Rifat Sipahi was selected to receive the 2015 ASME Dynamic Systems and Control Division Outstanding Young Investigator Award.

October 1, 2015

Biology Professor Gunther Zupanc and MIE Associate Professor Rifat Sipahi were awarded a $389K NSF grant to develop "A Three-dimensional Model of Spinal Cord Growth and Repair in a Regeneration-competent Organism".

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